Date: Sat, 4 Jul 2009 18:48:22 -0700
Reply-To: Scott Daniel - Turbovans <scottdaniel@TURBOVANS.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Scott Daniel - Turbovans <scottdaniel@TURBOVANS.COM>
Subject: Re: temp sensors?
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adjustment of the throttle switch pops to mind.
those get off ......I find them out of adjustment 'usually' even.
I find some worn enough that you can't adjust it to spec, without
lengthening a slot an adjustment screw slides in.
Timing is probably right ....but always important to consider that one.
oxygen sensor ?
does it run strongly cold, but less so warm ?
what's the status of the fuel filter ?
fwiw..........sure, I find tired tune up parts, and cheap tune up parts
........
and replace those of course ........but I never find 'poor running' is
really due to 'tune up parts' ..........not unless there's a bad plug wire
say , or fouled or very tired spark plug .......my point is ........
yes, tune up parts have to be decent and to spec, and adjusted right .......
but when they don't run right ..........it's usually things other than tune
up parts ..but they do have to be right of course as well.
Air flow meter ?
the only symptom I get on those is uneven running .......like weak spots in
the acceleration curve . I consider them a weak link because it's where
electrons interface with something mechanical...........always a weak area
in my opinion. Next technology up, uses an air mass meter with no moving
parts .......no sweeper arm or anything hokey light that .
vacuum leaks ?
I had one waterboxer engine that ran, started nicely......but just didn't
rev out well.
You could even tell............open the throttle.......it was getting the
air, but no fuel to go with it.
I found about a dozen intake air leaks on that engine .......
and that's all it was. It was leaking at the intake runner rubber boots, at
the throttle body rubber seal, at the screws that secure the fuel pressure
regulator bracket even .......lots of tiny leaks. That's all it was too.
speaking of ........fuel pressure ..........usually good, but you need to
always consider or test for that one too.
Scott
www.turbovans.com
----- Original Message -----
From: "jonathan waters" <shponglevan@GMAIL.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Saturday, July 04, 2009 7:08 AM
Subject: temp sensors?
> Hi,
> I have a 2.1, and it started to run kind of funny?
> It starts good, and has been running real good.
> until now that is!
> I have given it a real good tune up.
> Even a new cat.
> but what I am experiencing now,
> after just driving 800 miles,
> is a lack of power on starting to drive?
> I have to rev it up to get it to have any Ump!
> I am wondering if it may be a temp sensor?
> Is there 2 of them?
> And where are they located?
> Any help from you guys would be much appreciated!
> Thanks,
> jon
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